Boiruna sertaneja, also known commonly as a mussurana (along with several other snakes), is a species of snake in the subfamily Dipsadinae of the family Colubridae.

[2] A medium to large snake, B. sertaneja may attain a snout-to-vent length (SVL) of 2.35 m (7.7 ft).

[1] The preferred natural habitats of B. sertaneja are savanna and shrubland.

[1] B. sertaneja preys predominately upon snakes, but may also eat lizards.

[1][2] Females reach sexual maturity at a total length (including tail) of about 1.3 m (4.3 ft).